Annotations: 1NRI

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1nria_	Alpha and beta proteins (a/b)	SIS domain	SIS domain	mono-SIS domain	Hypothetical protein HI0754	(Haemophilus influenzae ) [TaxId: 727 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	mono-SIS domain	8021188	4003354	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SIS domain/Ribosomal protein S2-like	8033568	3001397	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	murQ_2nd,PRK12570	e1nriA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: murQ_2nd,PRK12570	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10490	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF20741	C-terminal lid domain of glucokinase regulatory protein (GKRP-like_C)	C-terminal lid domain of glucokinase regulatory protein	This domain is found at the C terminus of Glucokinase regulatory protein (GKRP) from animals and N-acetylmuramic acid 6-phosphate etherase (MurQ) from bacteria. GKRP binds Glucokinase (GK) mainly through hydrophobic interactions, functioning as an al ...	This domain is found at the C terminus of Glucokinase regulatory protein (GKRP) from animals and N-acetylmuramic acid 6-phosphate etherase (MurQ) from bacteria. GKRP binds Glucokinase (GK) mainly through hydrophobic interactions, functioning as an allosteric switch in blood glucose control by the liver [1]. GKRP is trilobal in shape, consisting of two topologically identical sugar isomerase (SIS) domains (Pfam:PF01380 and Pfam:PF13580) capped by an alpha helical C-terminal domain (this entry). The Lid domain consists of a bundle of seven alpha helices with a core that shows a UBA-like fold [2]. MurQ, which also shows a SIS domain, plays a key role in the peptidoglycane recycling pathway. Its crystal structure shows each monomer have an alpha-beta-alpha sandwich fold commonly found in regulatory proteins controlling the expression of genes involved in the synthesis of phosphosugars. The C-terminal domain of this protein (this entry) is comprised of five alpha helices [4].	Domain
A	PF22645	Glucokinase regulatory protein N-terminal SIS domain (GKRP_SIS_N)	Glucokinase regulatory protein N-terminal SIS domain	This domain is found N-terminal in glucokinase regulatory protein (GKRP) and related proteins. GKRP regulates glucokinase and it is activated by fructose 6-phosphate and inactivated by fructose 1-phosphate. It consists of two topologically identical ...	This domain is found N-terminal in glucokinase regulatory protein (GKRP) and related proteins. GKRP regulates glucokinase and it is activated by fructose 6-phosphate and inactivated by fructose 1-phosphate. It consists of two topologically identical SIS domains and and alpha-helical lid domain [1-4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Hypothetical protein HI0754	ether hydrolase activity hydrolase activity, acting on ether bonds hydrolase activity catalytic activity binding carbohydrate derivative binding lyase activity carbon-oxygen lyase activity	catabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process carboxylic acid catabolic process N-acetylmuramic acid catabolic process small molecule metabolic process metabolic process cellular process N-acetylmuramic acid metabolic process small molecule catabolic process catabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process carboxylic acid catabolic process N-acetylmuramic acid catabolic process small molecule metabolic process metabolic process cellular process N-acetylmuramic acid metabolic process small molecule catabolic process 1,6-anhydro-N-acetyl-beta-muramic acid catabolic process 1,6-anhydro-N-acetyl-beta-muramic acid metabolic process monocarboxylic acid catabolic process monocarboxylic acid metabolic process carbohydrate derivative catabolic process amino sugar catabolic process amino sugar metabolic process carbohydrate derivative metabolic process organonitrogen compound metabolic process peptidoglycan turnover glycosaminoglycan metabolic process aminoglycan metabolic process peptidoglycan metabolic process macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046348	SIS domain superfamily	Homologous Superfamily
A	IPR040190	N-acetylmuramic acid 6-phosphate etherase/glucokinase regulatory protein	Family
A	IPR005486	Glucokinase regulatory protein, conserved site	Conserved Site
A	IPR001347	SIS domain	Domain
A	IPR005488	N-acetylmuramic acid 6-phosphate etherase MurQ	Family

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.